Materials Literature
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The initiation of pitting corrosion of type 304 stainless steel under a thin electrolyte layer containing chloride ions has been investigated.1 M MgCl 2 solution layers with four different thicknesses of 1000, 500, 125, and 25 m were placed on the stainless steel electrode surface and then dried at different rates at…
The luminescent and reflectivity spectra of a series of the molybdates with the scheelite crystal structure were investigated using synchrotron radiation. The main features in reflectivity spectra in the energy range of 3.2–40 eV were analyzed. The luminescence spectra were measured under X-ray excitation and their re…
Achiral porphyrin derivatives 1-M form twisted supramolecular assemblies and the pitch of the twisted tape structure can be altered by changing the central metal.
Mg-Al hydrotalcite platelets with a lateral size of 20 nm were deposited on carbon nanofibers and the resulting supported catalyst exhibited a specific activity in the condensation of acetone four times that of unsupported hydrotalcites due to the higher number of active edge sites.
Porous alginate/polyvinyl alcohol (PVA) hybrid scaffolds as bioartificial cell scaffolds were fabricated to improve cell compatibility as well as flexibility of the scaffolds. The alginate/PVA hybrid scaffolds with different PVA compositions up to 50 wt% were fabricated by a modified freeze-drying method including the…
3-D interconnected networks of magnetic cobalt nanobowls with a wall size of <100 nm dimension have been fabricated. A novel technique was used to overcome the problem of volume shrinkage usually observed in such structures when formed by chemical conversion route. Cobalt particles were formed in the interstitial spac…
Fluorine atoms are selectively attached to the sidewall of the outer shell of DWNTs without disrupting the double-layered morphology; the stoichiometry of the fluorinated DWNTs is CF(0.30).
We propose a new upscaling scheme for the passage from atomistic to continuum mechanical models for crystalline solids. It is based on a Taylor expansion of the deformation function and allows us to capture the microscopic properties and the discreteness effects of the underlying atomistic system up to an arbitrary or…
We have investigated the formation of tungsten oxide nanowires under different CVD conditions. We find that exposure of oxidized tungsten films to hydrogen and methane at 900C leads to the formation of a dense array of typically 10 nm diameter nanowires. Structural and chemical analysis shows that the wires are crysta…
In the course of CASP6, we generated models for all targets using a new version of the "FRankenstein's monster approach." Previously (in CASP5) we were able to build many very accurate full-atom models by selection and recombination of well-folded fragments obtained from crude fold recognition (FR) results, followed b…
The ligand N,N'-bis[(6-carboxy-2-pyridylmethyl]ethylenediamine-N,N'-diacetic acid (H(4)bpeda) was synthesised using an improved procedure which requires a reduced number of steps and leads to a higher yield with respect to the published procedure. It was obtained in three steps from diethylpyridine-2,6-dicarboxylate a…
The binuclear complex NiII2L(H2O)2(ClO4)2(1) and the neutral tetranuclear bimetallic compounds [{M(III)(phen)(CN)4}2{NiII2L(H2O)2}].2CH3CN with M=Fe (2) and Cr (3)[H2L=11,23-dimethyl-3,7,15,19-tetraazatricyclo[19.3.1.1(9,13)]hexacosa-2,7,9,11,13(26),14,19,21(25),22,24-decaene-25,26-diol] have been synthesized and the…
Sequential anodizing is employed to investigate the mechanism of coating growth on aluminum under sparking in a phosphate electrolyte. Thus, coatings are formed in a silicate electrolyte and then in the phosphate electrolyte, with the location of phosphorus in the final coating being identified by electron probe micro…
In selecting adequate insulators for substations at distribution and transmission voltage levels, special measures may be needed in locations exposed to freezing conditions. This first part of the paper describes the environmental and insulator parameters that influence the risk of flashover on station insulators expo…
Half-Heusler compounds have a possibility as a new thermoelectric material due to the large thermoelectric power and low thermal conductivity derived from the band structure and voids in the crystal, respectively. Among these materials, we have paid attention to (Ti,Zr,Hf)CoSb system, and have investigated the improve…
Poly(vinyl alcohol) (PVA) of various molecular weight (MW=10,560-116,600) was successfully labeled with fluorescein isothiocyanate isomer I (FITC) according to the method of de Belder and Granath. A high-performance size-exclusion chromatographic procedure was developed for the quantitative analysis of FITC-labeled po…
A simple preparation method for biocompatible nanoparticles in high concentration (0.5 wt %) by self-assembly of chitosan and carboxymethyl cellulose hydrolysates was developed. Chitosan and carboxymethyl cellulose were hydrolyzed beforehand with chitosanase and cellulase respectively to make fragments having lower mo…
We demonstrate a multi-functional optical trap capable of trapping, motion control, position sensing and fluorescence detection of chemically treated polystyrene beads, using off-the-shelve optical components. It consists of two collinearly aligned single-mode fibers separated by a spacing of 130-170mum for trapping,…
Research Article| January 01, 2005 Heterosilicates with Tetrahedral-Octahedral Frameworks: Mineralogical and Crystal-Chemical Aspects Nikita V. Chukanov; Nikita V. Chukanov 1Institute of Problems of Chemical Physics, 142432 Chernogolovka, Moscow Region, Russia, chukanov@icp.ac.ru Search for other works by this author…
Heterometallic wheels can be templated about tertiary amines and imidazoles, leading to new octa-, nona- and deca-nuclear rings.